Roller cotton-gin



(Np Model.) 4 sneet-sheet -1.

W. DEARBORN ROLLER COTTON GIN.

No. 471,076. Patented 1v'.['1.r.`15, 1892.-

(No Model.) '4 Smets-sheet 2. W. DEARBORN. RLLER COTTO-N GIN.

No. 471,076.. Patented Mar. 15, 1892.

||l ll l! Il Il Il Il ll'll Il Il ll Il Il 1mm (No Model.) 4Sheets-Sheet 3.

W. 11E-11111301111. ROLLER COTTON GIN.

No. 471,076. Patented Mar. 15,1892.

WIT Esa-5- y I 4 sheets-'sheet 4.

(No Modl.)

W. DEARBORN. ROLLER COTTON GIN.

No. 471,076. "Patented Mar. 15, 1892.

Nirnn STATES PATENT Ormes.

VYMAN DEARBORN, OF BOSTON, MASSACHUSETTS, ASSIGNOR, BY DIRECT AND MESNEASSIGNMENTS, OF ONE-HALF TO CHARLES RIPLY, OF SAME PLACE, AND ALBERT W.MANN, OF MALDEN, MASSACHUSETTS.

ROLLER COTTON-GIN.

SPECIFICATION forming part of Letters Patent No. 471,076, dated March15, 1892.

Application filed November 26, 1890. Serial No. 372,671. (No model.)

To all whom it may concern:

Be it known that I, VYMAN DEARBORN, a citizen of the United States, anda resident of Boston, in lthe State of Massachusetts, have invented anew and useful Improvement in Roller Cotton-Gins, of which the followingis a full, clear, and exact description, reference being had to theaccompanying drawings,

forming a part of this specification, in ex- Io plaining its nature.

This improvement relates to the roller-gin; and it consists in a newcombination and arrangementof parts, in new and improved forms common tosome of the parts, and a new and improved connection of the moving partswith each other.

In the drawings, Figure l is a side elevation of a gin of my improvedconstruction. Fig. 2 is a plan thereof. Fig. 3 is a section zo throughthe center of the gin of plan parallel to the elevation shown in Fig. l.Fig. 4. is a longitudinal section of an improved way of constructing theroller. Fig. 5 is an end eletion of the roller, showing the mode inwhich the covering of the roller is tightened and how the surface ofsectional spirals is produced. Fig. 6 is a detail drawing of the meansby which the lever t" is supported.

In the drawings, B is the frame of the ma- 3o chine, and A is thedriving-wheel, on the axis of which is mounted the roller C. bar, thetop of which appears in Fig. l, is shown in Fig. 3 in section at E. Thispresserbar is made of sheet-steel, and is fastened to a bar at its loweredge, which baris united to the frame at its ends on each side by boltse4. A shaft e runs through the frame from side to side and has mountedupon it at frequent intervals eccentrics e', by which the edge of 4o thepresserbar may be adj usted to and from the periphery of the roller C. Arod e5 runs through the machine from side to side behind thepresser-bar, and has on it at frequent intervals eccentrics e6, whichbear against the back of the presser-bar. The position of this rod maybe adjusted by the handle e7. Thus this presser-bar is fast to the frameat its lower end and is pressed hard in both directions above its loweredge by the eccen- 5o trics e e6, and so may be retained in any de- Thepresser- 4 sired position. This construction and ara rangement of thepresser-bar forms in part the subject of an application divided from thepresent application, dated August 3, 1891, Serial No. 401,562, andpending simultaneously with it.

The clearers D reciprocate on an arc directly in front of thepresser-bar and are formed with knife-edges, as shown in Fig. 3. Theseclearers D are formed of one piece of 6o bent steel, as shown in Fig. 2,and have journals, as shown in that gure, which are mounted in slidingbearings d, which bearings are adapted to be clamped to the frame whenin the proper position. The arms of the clearer D are welded to thejournals on which it oscillates, andthe center of oscillation is alittle above the level of the center of rotation of the roller C,whereby the center of oscillation of the clearer D, the upper edge 7o ofthe presser-bar E, and the center of rota- 'tion of the roller C arebrought into nearly the same right line,"and as the presser-bar standsnearly at a tangent with the roller C at its horizontal diameter the nipof the roller C upon the fiber is a little tighter than it would be ifthe edge of the presser-bar did not stand quite so high, and at thesaine time, by thelocation of the axes of oscillation of the clearers ata point higher than the axis 8o of the roller C, a better combing actionis given to the clearer-blade, and the seeds are drawn away from thepresser-bar and from the roller C, insteadv of being thrown down almostparallel to it, as was formerly done in S5 gins where the clearersvibrated in a right line governed more or less by guides or parallellinks. The arms of the clearerD, it will be seen, are less than once anda half the radius of the roller C, which causes the edge 9o of theclearer to move rapidly away from the presser-bar as it descends. Thisshort-arm clearer is thought to be a great advantage.

In order to move the clearers with great accuracy into position, abearing d is mounted on the frame, through which passes a screw providedwith acrank-handle d2. This screw lays hold of the sliding box d andmoves it to and fro, and it may be set in any proper position by a nut.(Shown in Fig. l.) By this roo contrivance either end of the clearersmaybe moved toward or from the roll, and the clearer may be veryaccurately adjusted to its position. The journal ot' the clearer iscarried through the bearing (Z and terminates in a boss f4. (Shown inFig. 2.) Upon the top of this boss is mounted in standards a worm r, andthe shaft ol' this worm terminates in a crank g.

Centered upon the journal of the clearer is a rocker-arm F, whichterminates upward in a large eye, the upper edge of which is cut intoteeth adapted to engage with the worm-gear. This rocker-arm F isadjustable with relation to the clearers D by moving the worm-gear whenthe nuts are loosened which fasten it to the boss f4. Two curved slotspierce this arm near its outer edges, which curved slots are marked f onFig. 1. A couple of clamping-screws j" pass through these slots andengage with the boss beneath them. It is obvious, therefore, that byloosening the clamping-screws and moving the wormgear the angle at whichthe horizontal arms of the clearers D stand with relation to therockerarm F canbe adjusted, and when the proper angle has been obtainedthey can be clamped together. OE course any other ordinary system ofclam ping will. answer in this place and any other method of tineadjustment; but the worm gear and wheel upon the whole seem to be thesimplest and most delicate arrangement for this purpose.

The rocker-arm F is slotted at its lower end, as shown at F3, so that agreater or less throw may be given to the clearers D with the samelength of driving-crank. The driving-wheel A meshes with the pinion' t'upon the same shaft as the second wheel I, and this second wheel Imeshes with the pinion f3 on the shaft of the crank-wheel F. Thiscrankwheel F carries in its face a wrist-pinfs,which takes hold et a boxin aslotin the end of the link II?. This box is pressed into position inone direction by the spring ff and in the other direction by anadjusting screw flo. The spring f is strongly compressed at all times;but the position of the box in the length ot' the rod may be slightlyadj usted by aid ot the setscrew. The spring fg takes up some portion ofthe shock arising from the rapid reversal of the link F2 when themachine is run at high speed. The link F2 is slotted at F1, as shown inFig. l, and is united with the arm F by a bolt passing through slides inthe two slots F3 F4.

The mechanical construction of this device may be as follows: A slide ismounted in each slot F3 F4, which slide has a hole in it about thecenter and is provided with a screw-neck around the hole on one side andis form ed with a flange on the other or with a bevel upon its edges,which would serve the purpose of the flange referred to. A flange-nutrun down from the neck will engage the surface of the arm or link aroundthe slot, and by this means the slide may be clamped at any position inthe slot. The two necks around the hole would point in oppositedirections. Then the bolt, being passed through all from side to side,would make the pivotal connection. The bolt might be iixed to one slide,if desired, and the motion all take place in the other. Constructions ofthis sort are not unusual mechanical contrivances. The circle made bythe wrist-pin f8 will of course be a circle of unvarying radius. Thelength of the chord of the are described by the point of connectionbetween the rocker-arm F and the link f2 will therefore be a constant;but as the adjustment of the rocker-arm F with the clearers D may bevaried and will require to 1oe Varied from time to time according to theconditions of the work and according to the wear ot' the edges of thepresser-bar and the working edge of the clearers it is necessary to havethe slot F1 to accommodate this adjustment, and as, also, on differentkinds of cotton it is desirable at times to have different lengths ofstroke to the clearer it is desirable to slot the lower end of therocker-arm F, in order that the leverage of this arm may be adjusted.This arm F acts as a pendulum to balance the clearers D and to carry thenecessary vibration of themachine downward. Thejoint between therocker-arm F and the link F2 will be seen to be a joint otgreat pou er,and it may be somewhat varied in construction from this without varyingthe principle of operation of the machine.

The plan, Fig. 2, shows fulcrum of the 1ever i', and Fig. 3 shows thewheel I and pinion fi as supported in a frame, and the detail of thelever fr" is shown in Fig. G. The frame which carries the wheel I andvpinion Ai forms an offset of the lever 'i'. This frame is slotted atits upper end anda bolt r" with a clampingnut or a clamping-screw t"passes through the slot and fixes the position ot' the lever i at anyconvenient point. This is not au unusual method of insertingchange-gears in a machine.

The intermediate gear I and its pinion `i may be changed in order tochange the speed of the clearers without changing the speed of the roll(I, it' this should be desired.

In order to hold upon the liber ot the cotton it has been foundconvenient to provide spiral groo\'es in the surface of the roller, andthe best material hitherto in use for covering rollers has been a canvasfabric, some thing like packing, made up of several thicknesses ofcanvas cemented together by indiarubber. I propose to use strips ot thisfabric upon the exterior ot' the roller for its surface and to put themupon the roller parallel to each other; but I make my roller dil'terentfrom ordinary rollers, as shown in Figs. et and 5. In these C is theshaft. At one end of this shaft a head G is fastened by a spline. foodenthimbles II are then slipped upon the shaft, and these wooden thimblesare fitted accurately against each other, but are not splined to theshaft. Another head IOO IIO

K is fitted on the opposite end of the shaft from the head G, and thishead is not splined to the shaft. A plate L (shown in plan in Fig. 5 andin section in Fig. 4) is fitted upon the shaft and is splined to it.This plate LI ca rries in a recess a pawl P. The inside wall of the headK, which surrounds the recess into which the plateL fits, is providedwith internally-projecting ratchet-teeth, with which the pawl P isadapted to engage. It will be seen that this construction allows thehead G and the plate L to move in unison,while thehead K is not obligedto move with them. rlhe covering' of the roll, made into strips ofproper length and Width, is then laid onto the roll, the strips beingplaced side by side, and t-hese strips are securely fastened at one endto the head G and at the other end to the head K. This may be done bymeans of straps placed on their exterior, which clamp them down to theheads G and K, or by pins or nails, which unite them to these heads, orin any other appropriate way. If now onevof the heads be held stationaryand the other rotated round the shaft in such 'direction that theratchetteeth will slip upon the pawl or the pawl slip upon theratchet-teeth, the strips of covering, which were in the beginningparallel to the shaft,will be twisted upon it so as to lie around it inspirals, and thus I shall have a series of spiral grooves considerednecessary for the roll of the roller C.

It will be noticed that wheel A drives the crank-wheel F by means of anintermediate gear and pinion. Itis obvious that this is only one form ofdriving the wheel F and that more intermediate gearing could be used, orthat thewheel A could drive the crankwheel F directlyinstead ofindirectly, audit.

is also obvious that whether the intermediate gearing were used or notthe combination of the driving-wheel A and the crank-wheel F would be anequivalent combination.

I claim as my invention and desire to secure by Letters Patent of theUnited StatesV l. The combination, in a roller-gin, of the driving-wheelA, the shaft driven thereby, the roller C, mounted upon saidfshaft, thecrank-wheel F, driven from said wheel A, the gearing connecting saidwheel A with said crank-wheel F', the link F2, reciprocating from saidcrank-wheel F', the rocker-arm F, driven by the link F2, the clearer D,driven by said rocker-arm, and the presser-bar E, all arranged andoperating substantially as and for the purpose described.

2. In a roller-gin, the combination, with the clearer D, of therocker-arm F, having slots f therein, and with means for adjusting saidlrocker-arm F around the center of motion common to said clearer D androcker-arm F,

and with the boss f4, and clamping-screws f', substantially as and forthe purpose described.

3. The roll containing the combination ofthe head G, firmly fastened tothe shaft, the thimbles H and head K, not fastened to the shaft, butprovided with a ratchet, the pawlcarrying plate L, fastened to theshaft, the pawl P, the shaft C2, and the covering applied in parallelstrips, substantiallyas and for the purpose described.

4.. The roll containing the combination of a shaft, a head fixed uponthe shaft, another head not fastened to the shaft, but provided with aratchet, a pawl-carrying plate fastened to the shaft, a pawl, a seriesof thimbles between the heads, and a covering applied in parallel stripsand fastened to the heads, the said covering being stretched andarranged in spiral form around the thimbles by twisting the movablehead,substantially as herein shown, and for the purpose stated.

5. The combination of the clearer D and rocker-arm driving the same, thesaid rockerarm being provided with means for angular adjustment withrelation to the said clearer D with the crank-wheel F", and with theslotted arm F2, which drives said rocker-arm F,

whereby the angular adjustment of the clearer D to the rock-shaft may bevaried without varying the length of the arc of motion ofV theclearer-blade, substantially as and for the purpose described.

6. The combination of the clearer D, the arbor on which it oscillates,the wheel F', and the rocker-arm F, which drives said clearerD by meansof said arbor on which the clearer D oscillates, which rocker-arm F isslotted at its lower end and there combined With the slotted link F2,which connects with the wheel F, whereby the angular adjustment of theclearer D with the rocker-arm F may be varied and the length of arcdescribed by the clearer-blade may also be varied, substantially as andfor the purpose described.

7. The combination ,of the slotted link F2 with a wrist-pin box mountedin a slot of said slotted link F2, which wrist-pin box takes hold of acrank-pin in the face of the crank-wheel F and with the spring f,interposed between said wrist-pin and the body of the slotted arm F2,and with the adj usting-screw flo, adapted to adjust the position ofsaid wrist-pin box in the slot of said slotted arm F2 against thetension of the spring f9, substantially as and for the purposedescribed.

F. F. RAYMOND, 2d,

J. M. DoLAN.

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